Pregnancy testA pregnancy test measures a hormone called human chorionic gonadotropin (HCG). HCG is a hormone produced during pregnancy. It appears in the blood and urine of pregnant women as early as 10 days after conception. How the test is performed A pregnancy test may be performed using blood or urine. There are two types of blood pregnancy tests:
The urine HCG test is usually performed by placing a drop of urine on a prepared chemical strip. It generally takes 1 to 2 minutes for a result. How to prepare for the test: How the test will feel The urine test involves normal urination into a cup. The serum tests involve drawing blood through a needle and into a tube. Any discomfort you might feel from the blood draw will only last a few seconds. Why the test is performed This test may be done to
Normal Values HCG levels rise rapidly during the first trimester of pregnancy and then slightly decline. What abnormal results mean HCG levels should double every 48 hours in the beginning of a pregnancy. HCG levels that do not rise appropriately may indicate a problem with your pregnancy. Some problems associated with an abnormally rising HCG level include miscarriage and ectopic (tubal) pregnancy . Extremely high levels of HCG may suggest a molar pregnancy or more than one fetus -- for example, twins. Your health care provider will understand the significance of your HCG levels, and he or she should discuss the levels with you. Special considerations Urine pregnancy tests will only be positive when you have sufficient HCG in your blood. If you are very early in your pregnancy, and the HCG level is below 25-50 mIU/mL, the test will be negative. If you think you are pregnant, repeat the pregnancy test at home or at your health care provider's office. References Webster RA. Reproductive function and pregnancy. In: McPherson RA, Pincus MR, eds. Henry's Clinical Diagnosis and Management by Laboratory Methods. 21st ed. Philadelphia, Pa: Saunders Elsevier; 2006:chap 25. Morrison LJ. General approach to the pregnancy patient. In: Marx J, ed. Rosen’s Emergency Medicine: Concepts and Clinical Practice. 6th ed. St Philadelphia, Pa: Mosby Elsevier; 2006:chap 176. Review Date: 10/28/2008 Reviewed By: Linda Vorvick, MD, Seattle Site Coordinator, Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine; and Susan Storck, MD, FACOG, Chief, Eastside Department of Obstetrics and Gynecology, Group Health Cooperative of Puget Sound, Redmond, Washington; Clinical Teaching Faculty, Department of Obstetrics and Gynecology, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.
A.D.A.M.'s health encyclopedia is accredited by URAC, also known as the American Accreditation Healthcare Commission (www.urac.org). URAC's accreditation program is the first of its kind, requiring compliance with 53 standards of quality and accountability, verified by independent audit. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial reviewers. A.D.A.M. is also a founding member of Hi-Ethics (www.hiethics.com) and subscribes to the principles of the Health on the Net Foundation (www.hon.ch). The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.
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 Encouragement + An Assist = Success Nine days past her due date, Sara Howe was awakened at 3:00AM when her water broke. Thrilled that the long wait was finally over, Sara and her husband David packed up and headed to PeaceHealth Southwest Medical Center. By 5:00AM they were comfortably settled into one of PeaceHealth Southwest’s Labor Delivery Recovery and Postpartum rooms, ready for action. But four hours later, Sara contractions had still not progressed so her midwife started her on Pitocin. Soon the contractions kicked in and Sara was well on her way. At around eight o’clock the next morning, it was time for Sara to start pushing. So she pushed. And she pushed, and she pushed, and she pushed. "The first few hours of pushing went by without me realizing the time," remarked Sara. "But around the fourth hour I started to wonder if I was still making progress. That is when the encouragement of my midwife, husband and the PeaceHealth Southwest nursing staff kept me going. It was like I had my own cheering section." Unfortunately, even with all the support and encouragement, Sara’s labor was not progressing because her baby’s head was tilted in the birth canal. Neither Sara or her midwife wanted her to have a Cesarean section after all that work, so her midwife suggested an assisted delivery. Read more > Share your story. Submit your story with a local angle, and you could receive a free gift if it is selected for publication. |
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